Alike every other species of the planet, birds have also been majorly affected by the wrath of disastrous climate changes. Ranging from their genetic composition, behaviour to distribution and abundance, the ongoing rapid climate adversities have taken a serious toll on their lives, thereby leading to a revolutionary paradigm shift.
A myriad of natural factors including the temperature changes and length of sunlight serve as cues for the birds in framing their migration patterns. But, considering the drastic changes in the climate patterns, the cues are getting widely scattered as a result of which, the bird are facing some sort of serious confusion while directing their course of migration. Considering the scenario, here we would like to emphasise on the crucial factors which would influence the course of migratory birds due to climate change and global warming.
Loss of Habitat
The habitats on which migratory birds mostly depend are in great danger due to some of the serious adversities including flooding, temperature and desertification. For instance, the coastal wetland areas are mostly used by migratory birds for their foraging and nesting purposes, where they can take a halt to repose and refuel before they start continuing their journey. However, due to the rising sea levels, those regions have been completely drowned and thus, got completely lost for the birds. Resultantly, due to the loss of these stop-over places, the birds are facing a shortage of shelter, thereby facing difficulties to complete their journey.
Lack of Breeding Places
Mild winters aid the resident birds to survive as they, start on feeding on breeding places and food resources which, was meant to be consumed by the long distance migratory birds. This, in turn, has triggered the competition between migratory birds and resident birds has increased in terms of the procurement process of breeding grounds and food.
Scarcity of Food
The increased temperature levels in some regions during the spring season have resulted in an earlier arrival of many migratory bird species. Noticeably, the British birds used to arrive two to three weeks earlier at their breeding habitats nowadays compared to the scenario of thirty years ago. This, in turn, has led them to start breeding earlier than the usual time period as well. At the same time, the rising temperature level has triggered the vegetation to bloom and insects to hatch earlier. However, these environmental adaptations due to climate change and global warming are not considered to be in sync with each other. Resultantly, the birds are not getting sufficient food to feed their offsprings.
Climate change is adversely contributing to the disarrangement of ecological balances to a massive extent. Thus, it has become of pivotal importance to combat the impact of climate change for not only securing the interest of these migratory birds but, also to protect the overall interest of all species across the planet.